CN114776597B - Krill lossless mixing and conveying device - Google Patents
Krill lossless mixing and conveying device Download PDFInfo
- Publication number
- CN114776597B CN114776597B CN202210221211.2A CN202210221211A CN114776597B CN 114776597 B CN114776597 B CN 114776597B CN 202210221211 A CN202210221211 A CN 202210221211A CN 114776597 B CN114776597 B CN 114776597B
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- krill
- impeller
- runner
- arc
- cavitation
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- 241000239366 Euphausiacea Species 0.000 title claims abstract description 83
- 238000013016 damping Methods 0.000 claims abstract description 36
- 230000007704 transition Effects 0.000 claims abstract description 27
- 230000002265 prevention Effects 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 230000003139 buffering effect Effects 0.000 claims description 24
- 230000010355 oscillation Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 230000001066 destructive effect Effects 0.000 claims description 6
- 230000010349 pulsation Effects 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000002238 attenuated effect Effects 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention belongs to the technical field of marine fishery, and particularly relates to a mixing and conveying device for krill conveying operation. A krill lossless mixing and conveying device comprises a krill mixing and conveying runner and an anti-cavitation impeller; the krill mixed transportation flow channel comprises an inlet flow channel, a main flow channel and an outlet flow channel which are sequentially communicated; the cavitation prevention impeller is arranged in the main runner; the anti-cavitation impeller is provided with two arc-shaped blades which are spirally and alternately arranged; the interior of the arc-shaped blade is provided with a micro-channel along the trend of the blade; one end of the micro-channel is opened on the outer side wall of the front end of the arc-shaped blade, and the other end of the micro-channel is opened on the tail end of the arc-shaped blade. According to the device, the micro-flow channels are arranged in the impellers, so that cavitation of fluid entering the impellers is reduced, meanwhile, the transition device and the buffer damping device are arranged at the front end where the outlet flows, impact force of the fluid in the flow channels on krill is further reduced, extrusion damage to the krill is reduced, and integrity of the krill is guaranteed.
Description
Technical Field
The invention belongs to the technical field of marine fishery, and particularly relates to a mixing and conveying device for krill conveying operation.
Background
With the rapid development of modern marine fishery equipment, efficient antarctic krill mixed transportation equipment is generated. At present, most of mixing and conveying equipment for krill is centrifugal mixing and conveying equipment, and mixing and conveying efficiency is improved mainly through a centrifugal impeller. However, at higher rotational speeds of the centrifugal impeller, the blade tips and runner volute tongue positions may impact the krill, affecting its integrity, and adversely affecting its later processing.
Based on the consideration, the position with larger impact force in the krill transportation process is introduced into the flow control structure to control the flow fields of the centrifugal impeller and the flow channel, so that the integrity in the krill transportation process is reduced, and the transportation quality and the transportation efficiency are improved.
Disclosure of Invention
The invention provides a krill lossless mixing and conveying device, which aims to solve the problems existing in the prior krill mixing and conveying equipment. The device avoids the impeller rotating too fast to form tip vortex at the blade tip position through improving and optimizing the impeller structure, reduces the possibility of cavitation, reduces the extrusion damage to the krill, and ensures the integrity of the krill.
The technical scheme adopted for solving the technical problems is as follows: a krill lossless mixing and conveying device comprises a krill mixing and conveying runner and an anti-cavitation impeller; the krill mixed transportation flow channel comprises an inlet flow channel, a main flow channel and an outlet flow channel which are sequentially communicated; the cavitation prevention impeller is arranged in the main runner; the anti-cavitation impeller is provided with two arc-shaped blades which are spirally and alternately arranged; the interior of the arc-shaped blade is provided with a micro-channel along the trend of the blade; one end of the micro-channel is opened on the outer side wall of the front end of the arc-shaped blade, and the other end of the micro-channel is opened on the tail end of the arc-shaped blade.
As a preferable mode of the invention, the micro-flow channel comprises an inlet, a vortex diode, a flow guide pipe, a micro pulsation oscillation cavity, a connecting pipe, an annular accelerating cavity and a peripheral branch which are communicated in sequence.
Further, the wrap angle of the arc-shaped blades is 100-180 degrees, the arc-shaped blades gradually rotate outwards from the front end to the tail end, and the tips of the arc-shaped blades are connected with the edge of the impeller.
Further, the equivalent circle diameter of the main runner is between 1.05 and 1.2 times of the diameter of the cavitation prevention impeller.
Further, a plurality of buffer damping devices are uniformly distributed at the joint of the main runner and the outlet runner; one end of the buffering damping device is opened in the main runner, and the other end of the buffering damping device is opened at the joint where the main runner and the outlet flow.
Further, the buffering damping device is formed by sequentially connecting an inlet pipe, a buffering damping oscillation cavity and an outlet pipe; the pipe diameters of the inlet pipe and the outlet pipe are the same.
Further, the krill lossless conveying device also comprises a driving device; the driving device is connected with the cavitation prevention impeller through a transmission shaft and a coupling.
Further, the krill lossless conveying device further comprises a shell, and the krill mixed conveying runner is arranged in the shell; the shell is a solid shell or a hollow shell.
According to the device, the micro-flow channels are arranged in the impeller, so that cavitation of fluid entering the impeller is reduced, meanwhile, the buffer damping device is arranged at the front end of the outlet flow channel, the impact force of the fluid in the flow channel on krill is further reduced, extrusion damage to the krill is reduced, and the integrity of the krill is guaranteed.
Drawings
FIG. 1 is an external view of a krill lossless mixing and conveying apparatus according to the present invention;
FIG. 2 is a cross-sectional view of the krill lossless mixing apparatus of example 1;
FIG. 3 is a schematic view of the krill mixing channel in example 1;
FIG. 4 is a schematic structural view of a buffering damping device in embodiment 1;
FIG. 5 is a schematic view of the structure of a motor bracket;
FIG. 6 is a bottom view of the anti-cavitation impeller;
FIG. 7 is a perspective view of an anti-cavitation impeller;
FIG. 8 is a partial cross-sectional view of an anti-cavitation impeller;
FIG. 9 is a schematic diagram showing the overall structure of the krill lossless mixing and transporting apparatus in example 2;
FIG. 10 is a cross-sectional view of the krill non-destructive mixing apparatus of example 2;
FIG. 11 is a schematic diagram of the main flow channel and the outlet flow channel in embodiment 2;
FIG. 12 is a half-sectional view of the main flow path in example 2;
in the figure: 1: krill mixed transportation flow passage; 2: a sealing device; 3: a motor bracket; 4: a motor; 5: a coupling; 6: a transmission shaft; 7: a bearing; 8: cavitation prevention impeller; 9: a housing; 10: an end cap.
1-1: an inlet flow passage; 1-2: an inlet; 1-3 buffering and damping oscillation cavities; 1-4: an outlet flow passage; 1-5: a first bolt hole; 1-6: a corner transition structure; 1-7: a duct; 1-8: a second bolt hole; 1-9: a bearing seat; 1-10: a sealing seat; 1-11: a main flow passage; 1-12: an inlet pipe; 1-13: an outlet tube;
3-1: a shaft hole; 3-2: a third bolt hole; 3-3: a support;
8-0: an arc-shaped blade; 8-1: an inlet; 8-2: an eddy current diode; 8-3: a flow guiding pipe; 8-4: a micro pulsation oscillator; 8-5: a connecting pipe; 8-6: an annular acceleration chamber; 8-7: a first branch; 8-8: a second branch; 8-9: an impeller shaft hole;
9-1: a solid housing; 9-2: a hollow shell.
Detailed description of the preferred embodiments
In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Embodiment 1 the whole structure of the krill lossless mixing and conveying device provided by the embodiment is shown in fig. 1 and 2, and the device comprises a krill mixing and conveying runner 1, a sealing device 2, a motor bracket 3, a motor 4, a coupling 5, a transmission shaft 6, an anti-cavitation impeller 8, a shell 9 and the like.
In this embodiment, as shown in fig. 2, the krill mixing channel 1 is a channel formed inside the solid housing 9-1, and mainly includes an inlet channel 1-1, a main channel 1-11, and an outlet channel 1-4. The inlet runner 1-1 and the outlet runner 1-4 are respectively in a space vertical relation with the main runner 1-11, and as shown in the figure, the main runner 1-11 is of a hollow structure similar to a volute, the upper end of the inlet runner 1-1 is communicated with the middle part of the main runner 1-11, and the inner end of the outlet runner 1-4 is communicated with the outlet of the main runner 1-11 to form krill mixed transportation runners communicated with each other.
The solid shell 9-1 is also provided with a pore canal 1-7 for installing the transmission shaft 6, a bearing seat 1-9 for installing the bearing 7 and a sealing seat 1-10 for installing a sealing device. And bolt fixing holes are reserved at corresponding positions.
As shown in FIG. 2, the anti-cavitation impeller 8 is arranged in the main runner 1-11, and the equivalent circle diameter of the main runner 1-11 is 1.05-1.2 times of the diameter of the anti-cavitation impeller 8, so that nondestructive mixed transportation can be realized. The transmission shaft 6 is connected with an anti-cavitation impeller 8 through the pore canal 1-7. Wherein, bearing 7 is located in bearing frame 1-9, and sealing device 2 is located sealed 1-10 positions, and motor support 3 is fixed in solid casing 9-1 through second bolt hole 1-8. The outer port connecting pipeline of the outlet runner 1-4 is fixed through the first bolt hole 1-5.
As shown in fig. 5, the shaft hole 3-1 of the motor bracket 3 is a through hole of the transmission shaft 6, the transmission shaft 6 and the shaft of the motor 4 are connected between the shaft hole 3-1 of the motor bracket and the support 3-3 through the coupling 5, and the third bolt hole 3-2 on the motor bracket 3 is connected with the second bolt hole 1-8 on the solid housing 9-1, so as to fix the motor 4. The motor 4 is fixed to the support 3-3 of the motor bracket 3 by bolts. The motor 4 drives the cavitation prevention impeller 8 to rotate in the main flow channels 1-11 through the transmission shaft 6.
As shown in fig. 3 and 4, since the main flow path 1-11 is vertically aligned with the outlet flow path 1-4 in the horizontal direction, there is a corner transition structure 1-6 where the main flow path 1-11 and the outlet flow reach. The position is the position with the largest krill stress in the krill mixing transportation process, and in order to reduce the stress in the krill transportation process and improve the integrity of the krill transportation, a buffering damping device is arranged at the position and comprises a buffering damping oscillation cavity 1-3, wherein one end of the buffering damping oscillation cavity 1-3 is communicated with an inlet 1-2 on the side wall of a main runner 1-11 through an inlet pipe 1-12, and the other end of the buffering damping oscillation cavity 1-3 is opened at the position of a corner transition structure 1-6 through an outlet pipe 1-13. Considering the ductility of the corner transition structure 1-6 along the radial position, 3-7 identical buffer damping devices 1-3 can be uniformly distributed along the radial position of the corner transition structure 1-6, and odd numbers are preferred, so that one buffer damping device is arranged at the radial center position of the runner.
When the cavitation prevention impeller 8 rotates through the corner transition structure 1-6, local high pressure is formed in the main runner 1-11, pressure is relieved through the inlet 1-2 at the position, pressure is reduced, fluid enters the inlet pipe 1-12 through the inlet 1-2, pulse attenuation of the buffering damping oscillation cavity 1-3 is achieved, and the fluid is discharged through the outlet pipe 1-13. Due to the periodicity of rotation of the anti-cavitation impeller 8, the jet flow of the damping vibration oscillation cavity 1-3 also presents a certain periodicity. When the anti-cavitation impeller 8 just rotates through the corner transition structure 1-6, the transported krill just reaches the corner transition structure 1-6, and a recoil effect is achieved on the krill through periodic pulse jet flow of the buffering damping device, so that collision between the krill and the corner transition structure 1-6 is reduced.
As shown in fig. 6, 7 and 8, the anti-cavitation impeller 8 is composed of two symmetrical arc-shaped blades 8-0, the two arc-shaped blades 8-0 are arranged on the impeller disc in a spiral staggered manner, the wrap angle of each arc-shaped blade is between 100 degrees and 180 degrees, and each arc-shaped blade gradually rotates outwards from front to back until the tip of the blade is connected with the outer edge of the impeller. An S-shaped channel with two open ends is formed between the two arc-shaped blades for the krill to pass through.
The center of the cavitation-preventing impeller 8 is provided with an impeller shaft hole 8-9 for fixing the impeller with the transmission shaft 6.
The inside of each arc blade 8-0 is provided with a plurality of micro-channels, each micro-channel sequentially comprises an inlet 8-1, a vortex diode 8-2, a flow guide pipe 8-3, a micro pulsation oscillator 8-4, a connecting pipe 8-5, an annular accelerating cavity 8-6 and two branches of the tip from the front end to the tip: a first branch 8-7 and a second branch 8-8. Wherein the inlet 8-1 is located on the outer side of the front end of the arcuate blade 8-0, which is the flow-facing surface of the arcuate blade, and the first branch 8-7 and the second branch 8-8 open at the distal end.
The cavitation prevention impeller 8 receives incoming flow impact on the head-on surface in the rotating process, krill follows the flow to generate larger impact, fluid enters the micro-flow channel at the head-on position through the inlet 8-1, partial impact force received by the head-on surface can be removed, after the fluid enters the micro-flow channel, the fluid is guided along the guide pipe 8-3 along the extending direction of the arc-shaped blades through the vortex diode 8-2, the micro-pulsation oscillator 8-4 and the connecting pipe 8-5 flow through the annular accelerating cavity 8-6 in a way, alternating pulse jet flows are formed on the first branch 8-7 and the second branch 8-8 at the tip of the blades, and extrusion of the fluid which rapidly rotates the blade tips on the krill in the transportation process is reduced. Meanwhile, the alternating pulse jet flow interferes with the flow of the blade tip, so that tip vortex is prevented from being formed at the position of the blade tip when the impeller rotates too fast, and the possibility of cavitation is reduced. Considering that the blade has radial ductility, 3-7 micro-channels are uniformly distributed along the radial direction of the arc-shaped blade.
The working principle and flow of the krill lossless mixing and conveying device of the embodiment are as follows in detail:
the motor 4 transmits torque to the transmission shaft 6 through the coupler 5, and then transmits the torque to the cavitation prevention impeller 8, the cavitation prevention impeller 8 rotates, krill is pumped into the main runner 1-11 through the inlet runner 1-1, in the rotating process, the pressure of the head face of the cavitation prevention impeller 8 is larger, the fluid pressure of the head face is unloaded through a series of micro runners arranged in the arc-shaped blades 8-0, meanwhile, the incoming flow vertical to the head face is converted into flow with pre-rotation and consistent with the extending direction of the blades through the vortex diode 8-2 of the micro runners, the flow enters the micro pulsation oscillator 8-4 through the flow guide pipe 8-3, is accelerated to oscillate, then enters the annular acceleration cavity 8-6 through the connecting pipe 8-5, and is alternately accelerated to form micro pulse jet, and is ejected through two branches of the blade tips, so that the blade tip runners are influenced, the generation of tip vortex cavitation is inhibited, the jet of tip vortex pulsation is reduced, the pressure of the blade tips is prevented from damaging the krill, and the krill is damaged. When krill moves to the corner transition structure 1-6 under the drive of the cavitation prevention impeller 8 in the main runner 1-11, the krill collides to the corner transition structure 1-6 due to the influence of the rotation speed, the invention designs the buffering damping device 1-3 at the corner transition structure 1-6, fluid enters the inlet pipe 1-12 at the inlet 1-2 under the compression of the impeller, and forms oscillation jet flow through the buffering damping oscillation cavity 1-3 and is ejected from the opening of the corner transition structure 1-6 through the outlet pipe 1-13, thereby having a backflushing effect on the krill passing through the corner transition structure 1-6, and buffering the krill to collide on the corner transition structure 1-6. Thereby reducing the damage of the krill in the transportation process and realizing the harmless transportation of the krill. Krill is fed to the external pipeline via the outlet channel 1-4.
Embodiment 2 the whole structure of the krill lossless mixing and conveying device provided in this embodiment is as shown in fig. 1, 9 and 10, and is substantially the same as that of embodiment 1, and includes a krill mixing and conveying flow channel, a sealing device 2, a motor bracket 3, a motor 4, a coupling 5, a transmission shaft 6, an anti-cavitation impeller 8, a housing 9 and the like. In the present embodiment, the housing 9 is a hollow housing 9-2, and an end cap 10 is provided above the krill mixing channel.
The krill mixed transportation runner is a channel arranged in the hollow shell 9-2 and mainly comprises an inlet runner 1-1, a main runner 1-11 and an outlet runner 1-4. The inlet runner 1-1 and the outlet runner 1-4 are respectively in a space vertical relation with the main runner 1-11, as shown in fig. 10 and 11, the main runner 1-11 is of a hollow structure similar to a volute, the upper end of the inlet runner 1-1 is communicated with the middle part of the main runner 1-11, and the inner end of the outlet runner 1-4 is communicated with the outlet of the main runner 1-11 to form a krill mixed transportation runner communicated with each other.
Inside the end cap 10 are provided a duct for mounting the drive shaft 6, a bearing housing for mounting the bearing 7, and a sealing seat for mounting the sealing device. And bolt fixing holes are reserved at corresponding positions.
As shown in FIG. 10, the anti-cavitation impeller 8 is arranged in the main runner 1-11, and the equivalent circle diameter of the main runner 1-11 is 1.05-1.2 times of the diameter of the anti-cavitation impeller 8, so that nondestructive mixed transportation can be realized. The transmission shaft 6 is connected with the cavitation prevention impeller 8 through a pore canal in the end cover 10. Wherein, bearing 7 is located in the bearing frame, and sealing device 2 is located the sealing seat position, and motor support 3 is fixed on hollow casing 9-2 through the bolt hole. The outer port connecting pipelines of the outlet flow channels 1-4 are fixed through bolt holes.
As shown in fig. 5, the shaft hole 3-1 of the motor bracket 3 is a through hole of the transmission shaft 6, the transmission shaft 6 and the shaft of the motor 4 are connected between the shaft hole 3-1 of the motor bracket and the support 3-3 through the coupling 5, and the third bolt hole 3-2 on the motor bracket 3 is connected with the bolt hole on the hollow shell 9-2, so as to fix the motor 4. The motor 4 is fixed to the support 3-3 of the motor bracket 3 by bolts. The motor 4 drives the cavitation prevention impeller 8 to rotate in the main flow channels 1-11 through the transmission shaft 6.
As shown in fig. 11 and 12, since the main flow path 1-11 is in a vertical relationship with the outlet flow path 1-4 in the horizontal direction, there is a corner transition structure 1-6 at the junction of the main flow path 1-11 and the outlet flow. The position is the position with the largest krill stress in the krill mixing transportation process, and in order to reduce the stress in the krill transportation process and improve the integrity of the krill transportation, a buffering damping device is arranged at the position and comprises a buffering damping oscillation cavity 1-3, wherein one end of the buffering damping oscillation cavity 1-3 is communicated with an inlet 1-2 on the side wall of a main runner 1-11 through an inlet pipe 1-12, and the other end of the buffering damping oscillation cavity 1-3 is opened at the position of a corner transition structure 1-6 through an outlet pipe 1-13. Considering the ductility of the corner transition structure 1-6 along the radial position, 3-7 identical buffer damping devices 1-3 can be uniformly distributed along the radial position of the corner transition structure 1-6, and odd numbers are preferred, so that one buffer damping device is arranged at the radial center position of the runner.
When the cavitation prevention impeller 8 rotates through the corner transition structure 1-6, local high pressure is formed in the main runner 1-11, pressure is relieved through the inlet 1-2 at the position, pressure is reduced, fluid enters the inlet pipe 1-12 through the inlet 1-2, pulse attenuation of the buffering damping oscillation cavity 1-3 is achieved, and the fluid is discharged through the outlet pipe 1-13. Due to the periodicity of rotation of the anti-cavitation impeller 8, the jet flow of the damping vibration oscillation cavity 1-3 also presents a certain periodicity. When the anti-cavitation impeller 8 just rotates through the corner transition structure 1-6, the transported krill just reaches the corner transition structure 1-6, and a recoil effect is achieved on the krill through periodic pulse jet flow of the buffering damping device, so that collision between the krill and the corner transition structure 1-6 is reduced.
The working principle and flow of the krill lossless mixing and conveying device in this embodiment refer to the description about the working principle and flow in embodiment 1, and are not described here again.
Claims (6)
1. The utility model provides a harmless mixed transportation device of krill which characterized in that: comprises a krill mixed transportation runner and an anti-cavitation impeller; the krill mixed transportation flow channel comprises an inlet flow channel, a main flow channel and an outlet flow channel which are sequentially communicated; the cavitation prevention impeller is arranged in the main runner; the anti-cavitation impeller is provided with two arc-shaped blades which are spirally and alternately arranged; the interior of the arc-shaped blade is provided with a micro-channel along the trend of the blade; one end of the micro-channel is opened on the outer side wall of the front end of the arc-shaped blade, and the other end of the micro-channel is opened on the tail end of the arc-shaped blade; the main runner and the outlet runner are in vertical relation in the horizontal direction, and a corner transition structure is arranged at the joint of the main runner and the outlet runner; a plurality of buffer damping devices are uniformly distributed at the corner transition structure position of the joint of the main runner and the outlet runner; the buffer damping device is formed by sequentially connecting an inlet pipe, a buffer damping oscillation cavity and an outlet pipe; the pipe diameters of the inlet pipe and the outlet pipe are the same; one end of the buffering damping device is opened to the main runner through an inlet pipe, and the other end of the buffering damping device is opened to the corner transition structure through an outlet pipe; the fluid enters the inlet pipe, is attenuated by the pulse of the buffering damping oscillation cavity and is discharged through the outlet pipe; the jet flow of the damping oscillation cavity presents periodicity.
2. The krill non-destructive mixing and transporting device according to claim 1, wherein: the micro flow channel comprises an inlet, an eddy diode, a flow guide pipe, a miniature pulsation oscillation cavity, a connecting pipe, an annular acceleration cavity and a terminal branch which are communicated in sequence.
3. The krill non-destructive mixing and transporting device according to claim 1, wherein: the wrap angle of the arc-shaped blade is 100-180 degrees, the arc-shaped blade gradually rotates outwards from the front end to the tail end, and the tip of the arc-shaped blade is connected with the edge of the impeller.
4. The krill non-destructive mixing and transporting device according to claim 1, wherein: the equivalent circle diameter of the main runner is between 1.05 and 1.2 times of the diameter of the cavitation prevention impeller.
5. The krill non-destructive mixing apparatus according to any one of claims 1-4, wherein: the krill lossless conveying device also comprises a driving device; the driving device is connected with the cavitation prevention impeller through a transmission shaft and a coupling.
6. The krill non-destructive mixing and transporting device according to claim 5, wherein: the krill lossless conveying device also comprises a shell, wherein the krill mixed conveying runner is arranged in the shell; the shell is a solid shell or a hollow shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221211.2A CN114776597B (en) | 2022-03-09 | 2022-03-09 | Krill lossless mixing and conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221211.2A CN114776597B (en) | 2022-03-09 | 2022-03-09 | Krill lossless mixing and conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114776597A CN114776597A (en) | 2022-07-22 |
| CN114776597B true CN114776597B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210221211.2A Active CN114776597B (en) | 2022-03-09 | 2022-03-09 | Krill lossless mixing and conveying device |
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| CN (1) | CN114776597B (en) |
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| US4681508A (en) * | 1984-11-14 | 1987-07-21 | Kim Choong W | Supercavitation centrifugal pump |
| CN1054653A (en) * | 1990-02-21 | 1991-09-18 | Ksb股份公司 | Centrifugal pump |
| JPH09209963A (en) * | 1996-02-03 | 1997-08-12 | Nakase Noriyuki | Pump for carrying solid matter |
| KR200399161Y1 (en) * | 2005-06-09 | 2005-10-19 | 김정택 | Fish pump |
| JP2012202260A (en) * | 2011-03-24 | 2012-10-22 | Mitsubishi Heavy Ind Ltd | Impeller and turbo machine including the same |
| CN202958510U (en) * | 2012-11-16 | 2013-06-05 | 山东壮发泵业有限公司 | Fish pump driven by double-vane impeller and hydraulic motor |
| CN109667787A (en) * | 2018-12-12 | 2019-04-23 | 湖南普力海洋科技有限公司 | Radial-flow type fish pump impeller and radial-flow type fish pump |
-
2022
- 2022-03-09 CN CN202210221211.2A patent/CN114776597B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681508A (en) * | 1984-11-14 | 1987-07-21 | Kim Choong W | Supercavitation centrifugal pump |
| CN1054653A (en) * | 1990-02-21 | 1991-09-18 | Ksb股份公司 | Centrifugal pump |
| JPH09209963A (en) * | 1996-02-03 | 1997-08-12 | Nakase Noriyuki | Pump for carrying solid matter |
| KR200399161Y1 (en) * | 2005-06-09 | 2005-10-19 | 김정택 | Fish pump |
| JP2012202260A (en) * | 2011-03-24 | 2012-10-22 | Mitsubishi Heavy Ind Ltd | Impeller and turbo machine including the same |
| CN202958510U (en) * | 2012-11-16 | 2013-06-05 | 山东壮发泵业有限公司 | Fish pump driven by double-vane impeller and hydraulic motor |
| CN109667787A (en) * | 2018-12-12 | 2019-04-23 | 湖南普力海洋科技有限公司 | Radial-flow type fish pump impeller and radial-flow type fish pump |
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| Publication number | Publication date |
|---|---|
| CN114776597A (en) | 2022-07-22 |
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